Artwork of an active galactic nucleus, or AGN. Many, perhaps most large galaxies, are thought to harbour supermassive black holes in their central regions. These enormous gravitational powerhouses can weigh anything from a few hundred thousand to sev...

Artwork depicting a cluster of galaxies. Many of them are active - with superluminal jets emerging from their cores, likely powered by black holes....

From a NOIRLab press release, for which this image was commissioned. The scene depicts quasars that are poised to merge, after their respective host galaxies have collided. ...

Illustration of a coronal mass ejection emanating from the Sun. These events, CMEs for short, are powerful releases of solar charged particles (plasma) and magnetic field, travelling on the solar wind. When a CME hits Earth, it can cause a geomagneti...

From a NOIRLab press releases, for which this image was commissioned: 'Astronomers studying a powerful gamma-ray burst (GRB) with the Gemini South telescope, operated by NSF’s NOIRLab, may have detected a never-before-seen way to destroy a star. Un...

We are a few thousand kilometres from Enceladus, a mid-sized icy moon of Saturn. In 2005, the Cassini spacecraft discovered that this relatively small world - only 500 km across - is, surprisingly, geologically active. Geyser-like jets of water were ...